4907.54
Compulsory interlocking.

If the tracks of a railroad or electric railway cross at grade
the tracks of a railroad or electric railway previously constructed, the former
shall provide interlocking works or other fixtures satisfactory to the public
utilities commission at such crossing, and pay the costs of such fixtures and
the expenses of installing them. The maintenance and operation of such fixtures
shall be apportioned equally between the railroads by the commission. This
section does not apply to crossings of sidetracks only.